2017 TV technology line how to go? OLED or quantum dots

In the past two years, the competition in the global color TV industry has become more intense. On the one hand, companies represented by LG and Skyworth continue to exert OLED display technology to enable OLED TVs to be marketized quickly. On the other hand, TCL and Samsung are The representative company is committed to upgrading the liquid crystal display technology and applying quantum dot technology to the color TV field. In 2017, with Sony's introduction of OLED TVs and Hisense's official teaming of quantum dot technology, the contest between the two camps gradually increased and became one of the biggest highlights of the 2017 color TV industry.

Quantum dots are making power QLED is still in development

“OLED (Organic Light-Emitting Diode) displays are emerging as one of the technologies that can replace TFT-LCDs. Therefore, the LCD industry is looking for a solution to improve its color gamut and compete with OLEDs.” IHS Markit senior analyst Richard Son said.

In order to solve the short board with low color gamut of liquid crystal display, manufacturers have begun to apply quantum dot technology in the field of color TV in the past two years. LCD TVs using quantum dot technology can increase color gamut from 72% to 110%, significantly increasing the color performance of display devices. It is because of promising prospects for the development of quantum dots technology that TCL and Samsung adhere to the Quantum-dot television technology line and use quantum dot-TV as the main push product. Shanghai CES this year also made it clear that Hisense will choose QD technology as the technological breakthrough direction of TV product line in the future.

However, what exactly is quantum dot technology? This issue has been the topic of discussion in the industry. Professor Xu Zheng from Beijing Jiaotong University: “From a technical point of view, the application of quantum dots in display technology mainly includes two aspects: Quantum Dots-Backlight Unit (QD-) based on the photoluminescence properties of quantum dots. (BLU) and Quantum Dots Light Emitting Diode Displays (QLED) based on the electroluminescent properties of quantum dots. "The QLED is the real quantum dot technology with self-luminous characteristics, and it is the color TV industry has been working hard for it. The direction.

Hu Chunming, deputy secretary-general of the China Optics and Optoelectronics Industry Association Liquid Crystal Subcommittee, said that the current applications in the market are quantum dot photoluminescence technology. The essence of this technology is to add quantum dot materials to the backlight or color film of LCD panels to enrich the color of the display. The display unit is still a liquid crystal device. QLED can be called the “quantum dot display technology” in the true sense, but it is still in the experimental research stage, and it takes a long time from the experimental stage to the production stage, and it needs to solve the preparation process, light emission brightness, lifespan, efficiency and other aspects problem.

Barry Young, president of the International OLED Association, said that although Samsung has made public appearances on QLED TV at CES2017, from the technical point of view, the TV is not self-illuminating QLED, and it should be called QD-LCD TV precisely, still belongs to the use of LCD technology. Color TV products.

He further explained that, by its very nature, current display products can be broadly classified into non-emissive display and self-emission display. Non-self-luminous displays are mainly LCD camps, self-luminous displays as future display technologies, OLEDs and QLEDs currently in the research stage. QLED is a new technology similar to OLED in structure and is a self-luminous display technology that does not require a backlight source.

Self-illumination is favored OLED tightly grasp the time window

In the eyes of people in the industry, self-luminous technology has advantages and is one of the cores of future display technology development. In today's QLED market has not yet, the only self-luminous OLED technology with commercial capabilities is to seize the "window period", increase OLED TV promotion efforts to take the initiative.

It is understood that, in addition to LG, Skyworth and other manufacturers to further increase the OLED TV layout, Sony finally no longer cling to the liquid crystal field and switch to OLED, and at the CES2017 launched a 4K OLED TV. In fact, as early as 2007, Sony applied OLED technology to the television field for the first time, and developed an 11-inch 960×540-pixel active-matrix TV set, which caused a very large sensation. Although Sony later announced that OLED TVs have withdrawn from the Japanese market, the industry still has a high demand for Sony's return to the OLED market. Sony officially launched OLED TVs, leaving the OLED camp with an important force in addition to LG, Skyworth and Konka.

Zhang Subing, director of the Center for Conformity Testing at the Digital TV Standards Department of the Ministry of Industry and Information Technology, stated that OLED, as a new type of display technology, has unique advantages such as self-luminous characteristics, large viewing angle, zero-delay response speed, and more outstanding black performance. The base material is manufactured to realize curved display and has a good market prospect. With the advancement of technology and the popularity of the market, the large-size problems that previously plagued the OLED market will gradually be solved. As the market further expands and the price of large-size OLED TVs declines, more consumers will choose OLED TVs.

Deng Qingyun, a professor and OLED inventor at the Hong Kong University of Science and Technology, said that during the 30 years of development of OLED technology, brightness and lifetime problems were gradually solved. Although OLED TVs have better picture quality, they are still more expensive than LCDs, so they can only target the high-end market. From the perspective of upstream suppliers, only LGD's energy-producing OLED screen is currently available, and only more companies will participate in the future to advance the OLED industry further.

Of course, some powerful companies are also rapidly advancing QLED technologies that can also be self-illuminating to change the fact that only true OLEDs are currently available in the market. When true self-luminous QLED technology moves from the "laboratory" to the market, OLEDs will face a hard and positive battle. The arrival of this moment may take a long time, or perhaps faster than imagined, OLED wants to seize the opportunity, only to seize the time window. 2017 will be a crucial year.

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